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Jason Wessel 64e9ee3095 kgdb: add x86 HW breakpoints 
Add HW breakpoints into the arch specific portion of x86 kgdb.  In the
current x86 kernel.org kernels HW breakpoints are changed out in lazy
fashion because there is no infrastructure around changing them when
changing to a kernel task or entering the kernel mode via a system
call.  This lazy approach means that if a user process uses HW
breakpoints the kgdb will loose out.  This is an acceptable trade off
because the developer debugging the kernel is assumed to know what is
going on system wide and would be aware of this trade off.

There is a minor bug fix to the kgdb core so as to correctly call the
hw breakpoint functions with a valid value from the enum.

There is also a minor change to the x86_64 startup code when using
early HW breakpoints.  When the debugger is connected, the cpu startup
code must not zero out the HW breakpoint registers or you cannot hit
the breakpoints you are interested in, in the first place.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 		2008-04-17 20:05:39 +02:00
..
acpi PCI: don't load acpi_php when acpi is disabled 2008-02-21 15:34:37 -08:00
cpu Fix booting pentium+ with dodgy TSC 2008-04-06 16:10:40 -07:00
.gitignore .gitignore update for x86 arch 2007-10-17 21:19:04 +02:00
Makefile x86: kgdb support 2008-04-17 20:05:37 +02:00
alternative.c pop previous section in alternative.c 2008-04-09 18:38:08 -07:00
aperture_64.c x86: fix long standing bug with usb after hibernation with 4GB ram 2008-03-21 17:06:15 +01:00
apic_32.c x86: don't disable the APIC if it hasn't been mapped yet 2008-01-30 13:33:17 +01:00
apic_64.c x86: change bios_cpu_apicid to percpu data variable fixup 2008-01-30 13:33:21 +01:00
apm_32.c x86: isolate PIC/PIT in/out calls 2008-01-30 13:33:14 +01:00
asm-offsets.c
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asm-offsets_32.c lguest: fix build breakage 2008-02-26 12:55:49 +01:00
asm-offsets_64.c x86: add asm_offset PARAVIRT constants 2008-01-30 13:33:19 +01:00
audit_64.c
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bootflag.c x86: coding style cleanup for kernel/bootflag.c 2008-01-30 13:32:31 +01:00
bugs_64.c x86, 32-bit: trim memory not covered by wb mtrrs 2008-01-30 13:33:18 +01:00
cpuid.c x86: cpuid, msr: use inode mutex instead of big kernel lock 2008-02-04 16:47:59 +01:00
crash.c x86: disable hpet legacy replacement for kdump 2007-12-03 17:17:10 +01:00
crash_dump_32.c kmap leak fix for x86_32 kdump 2007-10-19 11:53:33 -07:00
crash_dump_64.c
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doublefault_32.c x86: unify tss_struct 2008-01-30 13:31:31 +01:00
ds.c x86: fix small sparse warning 2008-01-31 22:05:47 +01:00
e820_32.c x86: trim mtrr don't close gap for resource allocation. 2008-03-21 17:06:15 +01:00
e820_64.c x86: trim mtrr don't close gap for resource allocation. 2008-03-21 17:06:15 +01:00
early-quirks.c x86: fix section mismatch warning in early-quirks.c 2008-01-30 13:33:37 +01:00
early_printk.c x86: make early_console static in early_printk.c 2008-02-01 17:49:42 +01:00
efi.c x86: sparse warning in efi.c 2008-02-19 16:18:28 +01:00
efi_32.c x86: sparse error in efi_32.c 2008-02-19 16:18:28 +01:00
efi_64.c x86: EFI runtime code mapping enhancement 2008-02-13 16:20:35 +01:00
efi_stub_32.S
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efi_stub_64.S x86: EFI runtime service support 2008-01-30 13:31:19 +01:00
entry_32.S x86: don't make irq_return global 2008-02-19 16:18:29 +01:00
entry_64.S x86: fix execve with -fstack-protect 2008-02-26 12:55:57 +01:00
genapic_64.c x86: cleanup x86_cpu_to_apicid references 2008-01-30 13:33:11 +01:00
genapic_flat_64.c x86: convert cpu_to_apicid to be a per cpu variable 2007-10-19 20:35:03 +02:00
geode_32.c x86: GEODE: MFGPT: Use "just-in-time" detection for the MFGPT timers 2008-02-09 23:24:08 +01:00
head64.c x86: zap invalid and unused pmds in early boot 2008-02-18 20:54:14 +01:00
head_32.S x86: fix fault_msg nul termination 2008-03-21 17:06:15 +01:00
head_64.S x86: rename KERNEL_TEXT_SIZE => KERNEL_IMAGE_SIZE 2008-02-26 12:55:56 +01:00
hpet.c x86: revert assign IRQs to hpet timer 2008-04-04 18:36:49 +02:00
i386_ksyms_32.c x86: unexport __{read,write}_lock_failed 2008-01-30 13:30:29 +01:00
i387.c x86: fix merge mistake in i387.c 2008-03-07 16:39:14 +01:00
i8237.c Driver core: change sysdev classes to use dynamic kobject names 2008-01-24 20:40:40 -08:00
i8253.c x86: pit_clockevent can be static 2008-02-13 16:20:35 +01:00
i8259_32.c x86: i8259A: remove redundant irq_descinitialization 2008-02-19 16:18:34 +01:00
i8259_64.c x86: provide a native_init_IRQ function on 64-bit 2008-01-30 13:33:19 +01:00
init_task.c x86: delay the export removal of init_mm 2008-02-29 18:55:42 +01:00
io_apic_32.c arch/x86/kernel/io_apic_{64,32}.c: use time_before 2008-01-30 13:32:19 +01:00
io_apic_64.c arch/x86/kernel/io_apic_{64,32}.c: use time_before 2008-01-30 13:32:19 +01:00
io_delay.c x86: add dmi quirk for io_delay 2008-03-26 22:23:40 +01:00
ioport.c x86: refactor ioport unification 2008-01-30 13:33:10 +01:00
irq_32.c x86: remove all definitions with fastcall 2008-01-30 13:31:17 +01:00
irq_64.c x86: rename the struct pt_regs members for 32/64-bit consistency 2008-01-30 13:30:56 +01:00
k8.c
…
kdebugfs.c x86 boot : export boot_params via debugfs for debugging 2008-01-30 13:32:51 +01:00
kgdb.c kgdb: add x86 HW breakpoints 2008-04-17 20:05:39 +02:00
kprobes.c x86, kprobes: remove sparse warnings from x86 2008-02-19 16:18:28 +01:00
ldt.c x86: cleanup - eliminate numbers in LDT allocation code 2008-02-04 16:48:03 +01:00
machine_kexec_32.c vmcoreinfo: fix the configuration dependencies 2008-02-07 08:42:25 -08:00
machine_kexec_64.c vmcoreinfo: add the symbol "phys_base" 2008-04-02 15:28:19 -07:00
mca_32.c
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mfgpt_32.c x86: GEODE: add missing module.h include 2008-03-26 22:23:40 +01:00
microcode.c x86: fix section mismatch warnings when referencing notifiers 2008-02-01 17:49:42 +01:00
module_32.c
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module_64.c
…
mpparse_32.c Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
mpparse_64.c x86: fix section mismatch warning in acpi/boot.c 2008-01-30 13:33:37 +01:00
msr.c x86: cpuid, msr: use inode mutex instead of big kernel lock 2008-02-04 16:47:59 +01:00
nmi_32.c x86: fix compile warning building without CONFIG_SYSCTL 2008-02-19 16:18:29 +01:00
nmi_64.c x86: fix compile warning building without CONFIG_SYSCTL 2008-02-19 16:18:29 +01:00
numaq_32.c x86: convert TSC disabling to generic cpuid disable bitmap 2008-01-30 13:33:20 +01:00
paravirt.c x86: fill in missing pv_mmu_ops entries for PAGETABLE_LEVELS >= 3 2008-01-30 13:33:20 +01:00
paravirt_patch_32.c x86: move patching code to arch-specific file. 2008-01-30 13:32:10 +01:00
paravirt_patch_64.c x86: add stringify header 2008-01-30 13:33:19 +01:00
pci-calgary_64.c iommu sg: x86: convert calgary IOMMU to use the IOMMU helper 2008-02-05 09:44:11 -08:00
pci-dma_32.c i386: Clean up duplicate includes in arch/i386/kernel/ 2007-10-17 20:15:51 +02:00
pci-dma_64.c x86: revert: reserve dma32 early for gart 2008-03-22 19:25:41 +01:00
pci-gart_64.c x86, agpgart: scary messages are fortunately obsolete 2008-04-04 18:36:46 +02:00
pci-nommu_64.c x86 gart: rename iommu.h to gart.h 2007-10-30 00:22:22 +01:00
pci-swiotlb_64.c x86: nuke a ton of unused exports 2008-01-30 13:30:28 +01:00
pcspeaker.c
…
pmtimer_64.c x86: move pmtmr related declarations 2008-01-30 13:30:18 +01:00
process_32.c x86: Simplify cpu_idle_wait 2008-04-10 15:38:29 -07:00
process_64.c x86: Simplify cpu_idle_wait 2008-04-10 15:38:29 -07:00
ptrace.c x86: ptrace.c: fix defined-but-unused warnings 2008-03-27 16:08:44 +01:00
quirks.c x86: hpet clock enable quirk on nVidia nForce 430 2008-03-21 17:06:15 +01:00
reboot.c x86: fix reboot problem with Dell Optiplex 745, 0KW626 board 2008-03-21 17:06:15 +01:00
reboot_fixups_32.c x86: add the RDC machine specific reboot fixup 2008-01-30 13:33:36 +01:00
relocate_kernel_32.S
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relocate_kernel_64.S
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rtc.c x86: fix sched_clock() 2008-01-30 13:32:40 +01:00
scx200_32.c x86: fix sparse warning in kernel/scx200_32.c 2008-01-31 22:05:45 +01:00
setup64.c kgdb: add x86 HW breakpoints 2008-04-17 20:05:39 +02:00
setup_32.c x86: fix trim mtrr not to setup_memory two times 2008-03-26 22:23:41 +01:00
setup_64.c x86: fix memoryless node oops during boot 2008-03-26 22:23:40 +01:00
sigframe_32.h
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signal_32.c x86: clear DF before calling signal handler 2008-03-07 16:39:14 +01:00
signal_64.c x86: ia32 syscall restart fix 2008-03-11 17:11:54 +01:00
smp_32.c x86: voluntary leave_mm before entering ACPI C3 2008-01-30 13:32:01 +01:00
smp_64.c x86: voluntary leave_mm before entering ACPI C3 2008-01-30 13:32:01 +01:00
smpboot_32.c calibrate_delay() must be __cpuinit 2008-02-06 10:41:08 -08:00
smpboot_64.c x86: make c_idle.work have a static address. 2008-02-26 12:56:02 +01:00
smpcommon_32.c x86: change write_gdt_entry signature. 2008-01-30 13:31:13 +01:00
srat_32.c Merge branches 'release', 'bugzilla-6217', 'bugzilla-6629', 'bugzilla-6933', 'bugzilla-7186', 'bugzilla-8269', 'bugzilla-8570', 'bugzilla-9139', 'bugzilla-9277', 'bugzilla-9341', 'bugzilla-9444', 'bugzilla-9614', 'bugzilla-9643' and 'bugzilla-9644' into release 2008-02-07 03:09:43 -05:00
stacktrace.c x86: don't save unreliable stack trace entries 2008-02-26 12:55:58 +01:00
step.c x86 ptrace: avoid unnecessary wrmsr 2008-04-03 15:42:43 -07:00
summit_32.c spelling fixes: arch/i386/ 2007-10-20 01:13:56 +02:00
sys_i386_32.c remove include/asm-*/ipc.h 2007-10-17 08:42:55 -07:00
sys_x86_64.c x86: PIE executable randomization, checkpatch fixes 2008-01-30 13:31:07 +01:00
syscall_64.c
…
syscall_table_32.S timerfd: wire the new timerfd API to the x86 family 2008-02-05 09:44:07 -08:00
tce_64.c x86: Create clflush() inline, remove hardcoded wbinvd 2007-10-17 20:16:12 +02:00
test_nx.c x86: mark the .rodata section also NX 2008-02-06 22:39:45 +01:00
test_rodata.c x86: include proper prototypes for rodata_test 2008-02-14 23:30:20 +01:00
time_32.c x86: rename the struct pt_regs members for 32/64-bit consistency 2008-01-30 13:30:56 +01:00
time_64.c time: fix typo in comments 2008-02-08 09:22:29 -08:00
tls.c asmlinkage_protect replaces prevent_tail_call 2008-04-10 17:28:26 -07:00
tls.h x86: x86 user_regset TLS 2008-01-30 13:31:52 +01:00
topology.c x86: fix section mismatch warning in topology.c:arch_register_cpu 2008-02-19 16:18:30 +01:00
trampoline_32.S x86: remove misleading comments in trampoline_*.S 2008-02-04 16:48:01 +01:00
trampoline_64.S x86: remove misleading comments in trampoline_*.S 2008-02-04 16:48:01 +01:00
traps_32.c kgdb: fix NMI hangs 2008-04-17 20:05:38 +02:00
traps_64.c kgdb: fix NMI hangs 2008-04-17 20:05:38 +02:00
tsc_32.c x86: fix call to set_cyc2ns_scale() from time_cpufreq_notifier() 2008-04-07 21:09:14 +02:00
tsc_64.c x86: fix call to set_cyc2ns_scale() from time_cpufreq_notifier() 2008-04-07 21:09:14 +02:00
tsc_sync.c x86: add warning to check_tsc_warp() 2008-01-30 13:33:24 +01:00
verify_cpu_64.S
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vm86_32.c arch/x86/: spelling fixes 2008-01-30 13:31:42 +01:00
vmi_32.c x86: VMI fix 2008-02-04 16:47:54 +01:00
vmiclock_32.c x86: isolate PIC/PIT in/out calls 2008-01-30 13:33:14 +01:00
vmlinux.lds.S
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vmlinux_32.lds.S x86: lds - Use PAGE_SIZE instead of numeric constant 2008-02-19 16:18:33 +01:00
vmlinux_64.lds.S x86: lds - Use THREAD_SIZE instead of numeric constant 2008-02-19 16:18:34 +01:00
vsmp_64.c x86: clean up arch/x86/kernel/vsmp_64.c 2008-01-30 13:30:24 +01:00
vsyscall_64.c x86: restore vsyscall64 prochandler 2008-02-29 18:55:39 +01:00
x8664_ksyms_64.c x86: export cpu_gdt_descr 2008-01-30 13:31:10 +01:00